Model: 0.250 X 20 UNC-3A X 1.250 NICUAL

Hexagon Head Cap Screw

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
1.150 inches
Fastener Length
1.250 inches
Head Style
Hexagon
Head Height
Between 0.156 inches and 0.163 inches
Width Between Flats
Between 0.375 inches and 0.437 inches
Thread Diameter
0.250 inches
Thready Qty Per Inch (tpi)
20
Part Name Assigned By Controlling Agency
Screw, cap, hexagon head
Material
Nickel alloy
Thread Series Designator
Unc
NSN
5305-01-353-4552
Part Number
0.250 X 20 UNC-3A X 1.250 NICUAL
Description
Screw,cap,hexagon Head
CAGE
80204

An externally threaded fastener designed for insertion into holes in assembled parts, for mating with a preformed internal thread and for tightening or releasing by torquing the head. the threaded and unthreaded portions are both of the same nominal diameter of 0.190 inch (5 mm) or larger. head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. the thread length being the controlled dimension, the grip length is not specified. a locking feature may be incorporated in the design of the head or threads. the head is not designed to be held or driven with an inserted driver or by the thumb and fingers. excludes bolt,machine; bolt,externally relieved body; bolt,internal wrenching; and screw,cap,socket head.

Part 0.250 X 20 UNC-3A X 1.250 NICUAL NSN 5305-01-353-4552

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
18257
FIIG:
A003B0
Concept No.:
App. Key:
SB
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
A
ESD:
ESD:
MMAC:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
096640
UFC:
50600
LTL:
70.0
LCL:
--
WCC:
573
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 7508900000
  • SITC: 69975
  • End Use: Finished metal shapes
  • NAICS: 332999
  • USDA: 1

Freight Class: Other articles of nickel, nesoi (excluding cloth, grill & netting of nickel wire)

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